This is the heart-stopping moment a skydiver loses consciousness from hypoxia mid-jump.

After leaping from the plane at 22,000 feet, the skydiver filming notices his friend tumbling uncontrollably through the air – and realises he’s passed out.

He struggles to grab him as they both plunge towards the ground, with the unconscious diver falling and spinning too quickly to keep hold of.

The skydiver filming tries to grab his friend as he tumbles through the air (Picture: iLoveSkydivingVideos’s channel/YouTube)

After several failed attempts he finally gets a hand on the diver’s pack and another jumper comes to help.

Between the two of them, they manage to pull their friend’s cord and deploy his parachute.

According to the video’s description, the diver later told friends he woke up under the canopy of his chute.

The hypoxia arose from having to share only four oxygen masks between five divers, and the video poster said it has been made public to highlight the dangers of failing to prepare properly before a jump.